HistogramItem.hh

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#ifndef HISTOGRAM_ITEM_H
#define HISTOGRAM_ITEM_H

#include <qglobal.h>
#include <QColor>

#include "qwt_plot_item.h" 

class QwtIntervalData;
class QString;

class HistogramItem: public QwtPlotItem
{
public:

    explicit HistogramItem(const QString &title = QString::null);
    explicit HistogramItem(const QwtText &title);

    virtual ~HistogramItem();

    void setData(const QwtIntervalData &data);
    const QwtIntervalData &data() const;

    void setColors( std::vector< QColor >& _colors);


    virtual QwtDoubleRect boundingRect() const;

    virtual int rtti() const;

    virtual void draw(QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &) const;

    void setBaseline(double reference);
    double baseline() const;

    enum HistogramAttribute
    {
        Auto = 0,
        Xfy = 1
    };

    void setHistogramAttribute(HistogramAttribute, bool on = true);
    bool testHistogramAttribute(HistogramAttribute) const;

protected:
    virtual void drawBar(QPainter *, Qt::Orientation o, const QRect &) const;

private:
    inline QColor color(uint i) const;

    void init();

    class PrivateData;
    PrivateData *d_data;
};

#endif